{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\hline\hline
                    &\multicolumn{1}{c}{\specialcell{Uses any \\ new source}}&\multicolumn{1}{c}{\specialcell{Uses any \\ new source}}&\multicolumn{1}{c}{\specialcell{Fraction \\ water from \\ new source }}&\multicolumn{1}{c}{\specialcell{Fraction \\ water from \\ new source }}\\\cmidrule(lr){2-2}\cmidrule(lr){3-3}\cmidrule(lr){4-4}\cmidrule(lr){5-5}
                    &\multicolumn{1}{c}{(1)}   &\multicolumn{1}{c}{(2)}   &\multicolumn{1}{c}{(3)}   &\multicolumn{1}{c}{(4)}   \\
\hline
Treated             &       0.110***&       0.123***&       0.072***&       0.075***\\
                    &     (0.022)   &     (0.018)   &     (0.017)   &     (0.013)   \\
Baseline As > 10 ppb&       0.022*  &               &       0.020   &               \\
                    &     (0.012)   &               &     (0.013)   &               \\
Treated x baseline As > 10 ppb&       0.042*  &               &       0.013   &               \\
                    &     (0.023)   &               &     (0.019)   &               \\
Baseline As > 50 ppb&               &       0.040** &               &       0.036** \\
                    &               &     (0.018)   &               &     (0.017)   \\
Treated x baseline As > 50 ppb&               &       0.040   &               &       0.011   \\
                    &               &     (0.026)   &               &     (0.021)   \\
Constant            &       0.104***&       0.109***&       0.088***&       0.092***\\
                    &     (0.013)   &     (0.010)   &     (0.012)   &     (0.009)   \\
\hline
R$^2$               &        0.07   &        0.07   &        0.04   &        0.05   \\
N                   &        6051   &        6051   &        6051   &        6051   \\
\hline\hline
\end{tabular}
}
